They are paying people who would otherwise work on Git in their spare time to work on it full time. That is a net win for everyone who uses git.
I'm going to give up at this point and just accept the fact that you're going to spin it such that any commercial entity that uses open source and doesn't open source their core product is a parasite. I think you're wrong, but you're certainly entitled to your opinion.
You're not entitled to your own facts, though.